Tusculan Disputations 1 ¶94 — Cicero (on the Stoics)

Cicero (on the Stoics), Tusculan Disputations 1 ¶94

But there are many who labor on the other side of the question, and condemn souls to death as if they were criminals capitally convicted. Nor have they any other reason to allege why the immortality of the soul appears to them to be incredible, except that they are not able to conceive what sort of thing the soul can be when disentangled from the body; just as if they could really form a correct idea as to what sort of thing it is, even when it is in the body, what its form, and size, and abode are, so that were they able to have a full view of all that is now hidden from them in a living body, they have no idea whether the soul would be discernible by them, or whether it is of so fine a texture that it would escape their sight. Let those consider this, who say that they are unable to form any idea of the soul without the body, and then they will see whether they can form any adequate idea of what it is when it is in the body. For my own part, when I reflect on the nature of the soul, it appears to me a far more perplexing and obscure question to determine what is its character while it is in the body—a place which, as it were, does not belong to it—than to imagine what it is when it leaves it, and has arrived at the free aether, which is, if I may so say, its proper, its own habitation. For unless we are to say that we cannot apprehend the character or nature of anything which we have never seen, we certainly may be able to form some notion of God, and of the divine soul when released from the body. Dicaearchus, indeed, and Aristoxenus, because it was hard to understand the existence and substance and nature of the soul, asserted that there was no such thing as a soul at all. It is, indeed, the most difficult thing imaginable to discern the soul by the soul. And this, doubtless, is the meaning of the precept of Apollo, which advises everyone to know himself. For I do not apprehend the meaning of the God to have been that we should understand our members, our stature, and form; for we are not merely bodies. Nor, when I say these things to you, am I addressing myself to your body. When, therefore, he says, “Know yourself,” he says this: “Inform yourself of the nature of your soul.” For the body is but a kind of vessel or receptacle of the soul, and whatever your soul does is your own act. To know the soul, then, unless it had been divine, would not have been a precept of such excellent wisdom as to be attributed to a God. But even though the soul should not know of what nature itself is, will you say that it does not even perceive that it exists at all, or that it has motion? On which is founded that reason of Plato’s, which is explained by Socrates in the Phaedrus, and inserted by me, in my sixth book of the Republic: That which is always moved is eternal; but that which gives motion to something else, and is moved itself by some external cause, when that motion ceases, must necessarily cease to exist. That, therefore, alone, which is self-moved, because it is never forsaken by itself, can never cease to be moved. Besides, it is the beginning and principle of motion to everything else. But whatever is a principle has no beginning, for all things arise from that principle, and it cannot itself owe its rise to anything else; for then it would not be a principle did it proceed from anything else. But if it has no beginning, it never will have any end; for a principle which is once extinguished cannot itself be restored by anything else, nor can it produce anything else from itself, inasmuch as all things must necessarily arise from some first cause. And thus it comes about that the first principle of motion must arise from that thing which is itself moved by itself; and that can neither have a beginning nor an end of its existence, for otherwise the whole heaven and earth would be overset, and all nature would stand still, and not be able to acquire any force by the impulse of which it might be first set in motion. Seeing, then, that it is clear that whatever moves itself is eternal, can there be any doubt that the soul is so? For everything is inanimate which is moved by an external force; but everything which is animate is moved by an interior force, which also belongs to itself. For this is the peculiar nature and power of the soul; and if the soul be the only thing in the whole world which has the power of self-motion, then certainly it never had a beginning, and therefore it is eternal.